VIBRATION-PROOF CAPABILITY OF BALLAST MAT AND UNDER SLEEPER PAD ON THE CONCRETE BRIDGE

초록

Generally the ballast mat and the under sleeper pad are used to reduce vibration caused by operation of a train on the slab of a bridge. Effectiveness of the ballast mat and the under sleeper pad is verified by analysis of measured acceleration data for two bridges. The one is the ballast mat established bridge, and the other is the under sleeper pad established bridge. Each bridge is constructed with two sections of the established section and the un-established section. Test data are measured on the sleeper and the slab in each section of bridges.